G greeiore New member May 18, 2010 #1 lim (1-cosx)/x as x goes to 0 substitute x = y/2 and use the power reducing formula to get lim (siny)^2 as y goes to 0 then this is a continuous function that has a limit of 1 I have seen another proof of this, but this seems pretty easy if it works
lim (1-cosx)/x as x goes to 0 substitute x = y/2 and use the power reducing formula to get lim (siny)^2 as y goes to 0 then this is a continuous function that has a limit of 1 I have seen another proof of this, but this seems pretty easy if it works
